indentlog: refactor: move stream-inserters to print/ subdir

include/indentlog/pad.hpp

@@ -1,52 +0,0 @@
-/* @file pad.hpp */
-
-#pragma once
-
-#include <iostream>
-#include <cstdint>
-
-namespace xo {
-    /* use:
-     *   ostream os = ...;
-     *
-     * 1.
-     *   os << ":" << pad(8) << ":"
-     *
-     * writes
-     *   :        :
-     *
-     * 2.
-     *   os << pad(16, '-')
-     *
-     * writes
-     *   ----------------
-     *
-     * on os
-     */
-    class pad_impl {
-    public:
-        pad_impl(std::uint32_t n, char pad_char) : n_pad_{n}, pad_char_{pad_char} {}
-
-        std::uint32_t n_pad() const { return n_pad_; }
-        char pad_char() const { return pad_char_; }
-
-    private:
-        std::uint32_t n_pad_ = 0;
-        char pad_char_ = '\0';
-    }; /*pad_impl*/
-
-    inline pad_impl
-    pad(std::uint32_t n, char pad_char = ' ') { return pad_impl(n, pad_char); }
-
-    inline std::ostream &
-    operator<<(std::ostream & s,
-               pad_impl const & pad)
-    {
-        for(std::uint32_t i=0; i<pad.n_pad(); ++i)
-            s << pad.pad_char();
-        return s;
-    } /*operator<<*/
-
-} /*namespace xo*/
-
-/* end pad.hpp */